i am not saying there is only one way to do this, i am sure everyone thats done it has thier own way but i get a lot of questions on how to do it so here goes
well in my case, thier was no stimulation to warm up, no edging, and not much cr, infact too much cr and it was detrimental to maintaining the desired effect,
basically it was some pretty long sessions initially some up to 8 hrs but mostly average was 4,, body position was very important in the initial training too, as was the use of restraint to apply muscle tension in a pretty specific way, a way that put a lot of focus on the thighs, buttocks, perinium, etc. (it was very simular to sitting in nadu) so its no wonder i stay so ready as i spend a lot of time kneeling in that position, all thats needed at first is eaither a certian type of hard wood chair , a good stool, double wide saw horses, and or the more traditional bambo poles (short ones 2-4 of them,about two to four feet long) oh and some rope, and some flexibility training,i recomend yoga, you could do it all without the props but it will take much longer to achieve the effect, most all of the sessions after the first one are reinforcment sessions though many variations of the first session
we didnt do any preliminary edge play eaither the hojojutsu technique didnt call for it
didnt matter anyway after the first 5 minutes in position your allready shaking some from the tension,,the position required me to clench and bear down to attempt to aleviate the constantly building pressure in my legs
you rapidly learn to focus on your "holes" too as sometimes dildos or plugs are used to hieghten the effect, you also have a dominant right there telling you to clench and relax when he sees fit etc etc, you become super dependent on him very very quickely and are acutely aware of it, if he leaves yu sitting there in full position and his last order was to clench it can be a long ride, especially while blindfolded
eventually inbetween all the muscle tension pain and clenching and sweating you start to feel a different kind of pressure building inside,, like an approaching wave, centered right on the "spot" where a dick would drive deep (you ladies know where i am talking about) this builds too and as you go through repeated muscle spasms as yuor legs repeatably strain and give out and he has you clenching and holding more and more
you become so so much in his power so much so that when he finally says CUM that first time you think you have went insane ,because all of the sudden, WHAM, your cumming all over the place and you dont now how or why, "the earth gate" is very likely to open wide at that point so have some towels handy,
the amazing thing is you wont recal actually doing anything to cum for him, it will happen spontaniously, well that and it may very well be the biggest orgasm youve ever had up to that point
and that is only the begining of a first session weg